{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x75a11ebb8846a6d4b41d8c5cf2ed280ed3218349cb8c6a4c8b7914622ad8a817",
    "signature": "0x14dc939ff4ee3a734f1e87eaf10a39bfe0afd083ae4a2fe171def001ee4c303b4de0e76e944fc969782c310e196cbf802476da011ad62e74440c4c5449837d161b",
    "signer": "0x225A0F26D8c354e4B16725295bDabb4983d0F6F1",
    "userId": "994175139"
  }
}